developers.home-assistant/blog/2023-06-28-service-description-filters.md

author	authorURL	title
Erik Montnémery	https://github.com/emontnemery	Service call description filters

Service call descriptions have been changed to support filtering. It's possible to add a filter to a service call to not show entities which do not support the service call, it's also possible to add a filter to a service call field to not show fields which are not supported by a selected entity to the user.

For example:

• The brightness service call parameter for light.turn_on will only be shown if the light supports brightness.
• The climate.set_aux_heat service call will only allow picking a climate entity which supports auxiliary heat.

This features was introduced in core PR #86162 and is documented here.